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Finding the Fourth Proportional to 3,869.19, 5,804.19 and 1,272.13

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Solution

The fourth proportional to 3,869.19, 5,804.19 and 1,272.13 is: 1,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.19 : 5,804.19 = 1,272.13 : x
  2. Step 2: Convert to fraction form
    3,869.19/5,804.19 = 1,272.13/x
  3. Step 3: Cross multiply
    3,869.19x = 5,804.19 × 1,272.13
  4. Step 4: Simplify right side
    3,869.19x = 7,383,669.71
  5. Step 5: Solve for x
    x = 7,383,669.71/3,869.19
  6. Step 6: Final answer
    x = 1,908.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.